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Shape memory behavior of high strength Ni_(54)Ti_(46) alloys

机译:高强度Ni_(54)Ti_(46)合金的形状记忆行为

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摘要

Shape memory behavior of highly Ni-rich Ni_(54)Ti_(46) alloys was studied after aging (550 ℃, 3 h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500 MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500 MPa is applied.
机译:研究了时效(550℃,3 h,炉内冷却)后的高富Ni_(54)Ti_(46)合金的形状记忆行为。观察到一系列相变,并且发现形状记忆行为高度依赖于应力。老化后,在1500 MPa的超高应力水平下,观察到1%的转变应变具有低温滞后。此外,即使施加1500 MPa的高应力水平,也可以获得具有3%总应变的超弹性响应。

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